Big Bang survey mission completed

PARIS, Jan. 16 (UPI) -- An instrument aboard a European Space Agency orbiting telescope has completed its survey of the faintest remnant of light from the Big Bang, researchers said.

The High Frequency Instrument on ESA's Planck mission finally ran out of coolant necessary to keep it chilled enough to detect microwaves from the Big Bang and cold dust throughout the universe, ESA officials said.

"Planck has been a wonderful mission; spacecraft and instruments have been performing outstandingly well, creating a treasure trove of scientific data for us to work with," Planck project scientist Jan Tauber said in an ESA release Monday.

Launched in May 2009, the spacecraft was intended to complete two whole surveys of the sky, but continued to operate perfectly for 30 months, twice the expected time, and completed five full-sky surveys, researchers said.

While some results from Planck will be announced next month, the first results on the complete Big Bang and very early Universe surveys will not come for another year, scientists said.

Detailed and painstaking analysis of the data will be required to remove all of foreground emission noise and tease out the faintest, most subtle information in the remnant signals, they said.

The results are widely anticipated because there are still many different, competing ideas about what happened during the Big Bang.

"Planck's data will kill off whole families of models; we just don't know which ones yet," principle HFI investigator Jean-Loup Puget of the Universite Paris Sud in Orsay, France, said.

United Press International is a leading provider of news, photos and information to millions of readers around the globe via UPI.com and its licensing services.

With a history of reliable reporting dating back to 1907, today’s UPI is a credible source for the most important stories of the day, continually updated - a one-stop site for U.S. and world news, as well as entertainment, trends, science, health and stunning photography. UPI also provides insightful reports on key topics of geopolitical importance, including energy and security.

A Spanish version of the site reaches millions of readers in Latin America and beyond.

UPI was founded in 1907 by E.W. Scripps as the United Press (UP). It became known as UPI when after a merger with the International News Service in 1958, which was founded in 1909 by William Randolph Hearst. Today, UPI is owned by News World Communications.